Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b3b3b08f141584…

MALICIOUS

PDF

76.3 KB Created: 2021-01-25 08:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c300662cc27bf61e7257d39c47d3802d SHA-1: e45f74bd5e6c7477b80953b892f1404275d06420 SHA-256: 69b3b3b08f14158468859411b31fc1a195827ad909b4f42c24a976ecd3d10ae6
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a significant number of external links, many pointing to redirectors and SEO link farms, suggesting an attempt to direct users to malicious sites. The embedded URL 'https://druttle.ru/123?utm_term=stellaris+building+tall+vs+wide' is a primary indicator of this phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/123?utm_term=stellaris+building+tall+vs+wide PDF link annotation
    • https://cdn.sqhk.co/gofelaxes/Cd3ghBc/81205741021.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491439/normal_5ff7c364d146c.pdfIn PDF document text
    • https://lamerosezikane.weebly.com/uploads/1/3/1/4/131411411/f39f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405202/normal_5fffa2019a624.pdfIn PDF document text
    • https://nukarefu.weebly.com/uploads/1/3/4/1/134131348/1006468.pdfIn PDF document text
    • https://somotudodij.weebly.com/uploads/1/3/4/6/134699902/mewarusef-mexed-kivet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483833/normal_5ffa30ca7df52.pdfIn PDF document text
    • https://cdn.sqhk.co/junigofulum/agghbFb/7561748439.pdfIn PDF document text
    • https://pagafamowadaf.weebly.com/uploads/1/3/4/8/134878907/waganofur_puwibofiluzakej_giwuv_dalega.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413226/normal_5ff27bfe7002d.pdfIn PDF document text
    • https://jakoxizejibak.weebly.com/uploads/1/3/4/3/134348863/bigoponezupokoge.pdfIn PDF document text
    • https://bojuwidus.weebly.com/uploads/1/3/4/6/134698781/rulowelilisariwe.pdfIn PDF document text
    • https://lukadivosegiga.weebly.com/uploads/1/3/4/6/134679105/6292c5852f01f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381762/normal_6003f1a0edd49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lotibabakuj/luvosuworufodowomolarado.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDC 5160 bytes
SHA-256: 408d38ec8f9d4f089f0cd65321a725bb1fb695fd08b423511d9ff192a610a9d9
font_01_sfnt_off0000f170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF170 11068 bytes
SHA-256: 654b7e0f32960930fac923a730d01cb5e59a8544db541c69e93e685bbaaf8620
font_02_sfnt_off0001163a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1163A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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